People are designing circuits in Minecraft, and have been for years. That's an extreme example, but even my 8 year old son plays with redstone circuits and watches youtube howtos on how to do interesting setups in Minecraft on the Wii U.

In February of this year Minecraft apparently had 55 million players (with 122 million copies sold).[1]

1: http://www.ign.com/articles/2017/02/27/minecraft-has-55-mill...